diffUsing diffAssocUsing diffKeysUsing | Laravel Collections

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In this episode we are tackling three similar methods, the diffUsing(), diffAssocUsing() and diffKeysUsing(). Come along as we explore these advanced Laravel collection methods.

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In this series, we take a look at each of the available methods in the Laravel Collection class and dive deep through examples in explaining what it does.
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hi Victor, could you explain what is $a, $b in the callback function? I don't know the meaning of these variables. Besides, do we need always to return -1 or 0 in callback function? Thanks in advance

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